Parallel Shuangzha plate cracking valve

A technological advance



The valve compact structure, smooth operation, good sealing performance and long service life, configuration, intelligent actuators can realize automation.



Two structural features and technical difficulties



Structural features:



A compression part for the extra-thick steel plate welded structure. Two parallel Shuangzha sheet metal seal structure, sealing the surface of carbide surfacing. The valve is turned on, Sealing without friction. Three groups with disc spring wedge storage bodies and institutions, to ensure flexible and reliable valve movement. 4 Configuration intelligent actuators to realize automation.



Technical Difficulties:



A valve and other major structural parts are welded together with extra-thick steel plate, first and foremost problem is to solve weld penetration, while the structural parts without deformation process technology. 2 To improve the sealing surface hardness and wear resistance, in the seat and the gate sealing surface is required to solve large-scale carbide surfacing problems. Three refinements of the valve seat and valve body after welding, the weld away from the sealing surface due to close, a slight deformation after welding, a direct impact on the valve sealing performance. 4 guide plate for a large cast iron thin slab casting difficult. 6 built-in disc spring in the valve group of storage bodies, the valve closed, the disc spring compression storage group, the energy savings, so that when the valve opens an efficient and reliable. Disc spring group 415 ~ 593 ℃ under high-temperature long-term work, the choice of material is essential.



3 Product Scope



Parallel Shuangzha plate cracking valves, suitable for containing the 415 ~ 593 ℃ pyrolysis of coke gas and long-term use. 

  

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